To avoid the exclusivity of an A910 shutdown:
A manufacturing plant experienced an A.910 warning on a Yaskawa servo used in a robotic picking system. The maintenance team replaced both the servo motor and the SERVOPACK amplifier, yet the error persisted. This ruled out individual component failure.
While is a standard undervoltage (power loss at stop or standby), A910 is exclusive to Run-time undervoltage .
If all external checks pass and the fault remains even with stable input power, the drive’s DC bus sensing circuitry may have failed — contact Yaskawa support or an authorized repair center.
A: Yes. A faulty encoder or its wiring can cause a "faulty contact in the motor or encoder wiring" error, which is a listed cause of A.910. If the encoder sends incorrect position or speed feedback, the drive may push more current to the motor than necessary, creating an overload state. yaskawa error code a910 exclusive
On a Yaskawa servo drive display, A910 is a . It's a crucial early indicator that the motor system is being pushed beyond its safe limits. Specifically, Yaskawa error code A910 appears before the more serious overload alarms, A.710 or A.720.
Check if panel fans are working or if the heat sink is obstructed.
Technical Comparison Matrix: A.910 Behavior Across Generations Yaskawa Drive Generation Specific Code Meaning Common Underlying Culprit Primary Parameter Control Pre-Overload Warning Internal control cabinet temperatures exceeding 55°C. Pn52B (Overload Warning Level) Sigma 5 (SGDV) Pre-Overload Warning Mechanical binding or incorrect linear scale configuration. Pn52B (Overload Warning Level) Sigma 7 (SGD7S) Pre-Overload Warning
Use shielded, twisted-pair cabling for all control and network connections, ensuring the shield is grounded correctly (typically at the drive end only). Step 4: Review DriveWorksEZ / Custom Logic To avoid the exclusivity of an A910 shutdown:
To minimize occurrences of the warning in automated facilities, implement the following maintenance steps: A.910 fault in Yaskawa Sigma 7 servo drive - Click2Electro
Yaskawa A.910 error code Overload Warning . It is not a hard "alarm" that will immediately stop your machine, but rather a final warning that you are about to trigger a full (Instantaneous Maximum Load) or (Continuous Overload) alarm. Yaskawa.eu.com
thermal mathematical model based on current draw over time. If the current exceeds the continuous rated limit of the drive-motor pairing, the internal counter accumulates thermal points. 2. The Relationship Between A.910, A.710, and A.720
The is an overload warning alarm designed to alert operators that a servo system is approaching its maximum thermal or mechanical physical threshold. Acting as a critical predictive barrier, this error trips immediately before major hardware-stopping faults—specifically A.710 (high overload) and A.720 (low continuous overload)—occur to protect system components from severe heat or physical damage. While is a standard undervoltage (power loss at
Do not swap the drive. Swap the digital operator with a brand new or known working unit from another machine of the exact same model .
: You can modify the overload warning level to be more suitable for your operation, provided it still protects the motor from actual damage.
Ensure the drive chassis is connected to a low-impedance system ground.
| Scenario | Repair Cost | Success Rate | Recommended Action | | :--- | :--- | :--- | :--- | | Ripple on +5V > 100mV | $200 (re-cap) | 90% | Send control board to electronics repair shop. | | Operator works on other drive | $75 (new JVOP) | 100% | Replace digital operator. | | Operator fails on multiple drives | $400+ | 10% | Inspect main power ground; replace bonding jumpers. | | FFC cable wiggling causes error | $15 (cable) | 99% | Replace FFC cable (part # EC0A234...). | | Drive is GA800 with old FW | $0 (update) | 95% | Update firmware to v7.11 or later. |